Sampling
of Analogue Signals
•Sampling
means splitting in regular interval to convert it in digital form.
•Sampling
converts continuous
signal to discrete signal.
•Actually
the accuracy of analogue signal is more than digital because digital signal
have finite
data.
•All the positions in discrete signal
is a number.
•So
analogue signal have some different advantages and digital signal have some
different advantages.
•Sampling
is used in measurement
system and data converters.
•By
using different sampling
rate we can sampled the signal.
•Sampling
frequency or sampling rate Fs
= 1/T is
the number of samples obtained in
one second.
•If
the samples are less then it will cause aliasing
which will cause loss in information.
•Using
Nyquist theorem (Fs ≥2B)
where
2B is Nyquist rate we can avoid aliasing and decide how much sampling
frequency should use.
•Using
sampling we can store the analogue data in digital form.
